Simple split calibration device and calibration method

Abstract

The invention provides a simple split calibration device and calibration method.The simple split calibration device comprises a laser emission module and a reflection module, a supporting face is formed at the bottom of the laser emission module, and the laser emission module emits laser perpendicular to the supporting face; the reflection module is provided with a reflection mirror surface used for reflecting the laser. The simple split calibration device is simple in structure, small in size, convenient to carry and low in manufacturing cost, calibration efficiency can be effectively improved, and the problem that calibration is difficult in an optical system is solved; according to the calibration method, whether calibration is completed or not is judged by observing the laser emission condition of the reflection module; the calibration method is simple to operate and easy to implement, and has low requirements on professional skills of operators.

Description

Technical Field

[0001] The present invention relates to the technical field of optical systems, and in particular to a simple split calibration device and a calibration method. Background Art

[0002] Optical systems are composed of a variety of optomechanical components. Optomechanical components are the abbreviation of optical elements and optical mechanical combination kits. Their functions are to reflect, transmit, refract, diffract, filter, separate, couple, shape, switch, converge, disperse, collimate, deflect, conduct, attenuate, absorb, etc. light to complete optical experiments, research, testing, teaching, etc. These optomechanical components are generally built on an optical test platform (such as an optical breadboard), and the optomechanical components cooperate with each other to form a light path transmission;

[0003] Among them, when the optomechanical components are being built, the parallelism between the optomechanical components and the platform reference surface (such as the top surface of the optical breadboard) affects the accuracy of the optical path transmission. At present, the construction and calibration of the optomechanical components generally rely on the operator's skills and experience. Commonly used auxiliary tools include rulers, angle squares, height gauges, imaging plates and shading plates, which make the calibration efficiency relatively low; in a few cases, large instruments and equipment such as laser collimators and interferometers can be used for calibration, but such equipment is expensive, complicated to debug, and requires high professional skills of the operators, resulting in low practicality; and, in many cases, the optical system will stack multiple optomechanical components vertically and horizontally in space, and the optomechanical components need to be calibrated layer by layer in the vertical direction. After the optical system is built, its internal space is limited, and large instruments and equipment such as laser collimators and interferometers occupy a large space and basically cannot be placed in a compact optical system, making them difficult to use; therefore, it is necessary to develop a calibration device with simple structure and easy operation. Summary of the invention

[0004] In view of this, the present invention proposes a simplified split calibration device, the purpose of which is to solve the problems of low calibration efficiency and high calibration difficulty of optical-mechanical components in current optical systems, at least to a certain extent.

[0005] The technical solution of the first aspect of the present invention is achieved as follows:

[0006] A simple split calibration device, comprising:

[0007] A laser emitting module, wherein a support surface is formed at the bottom of the laser emitting module, and the laser emitting module emits a laser perpendicular to the support surface;

[0008] A reflection module is provided, wherein the reflection module has a reflection mirror surface for reflecting the laser.

[0009] As a further optional solution, the laser emission module includes a first shell, the support surface is formed at the bottom of the first shell, a laser generator for emitting the laser is provided in the first shell, and a light exit hole for emitting the laser is provided at the top of the first shell;

[0010] The reflection module includes a second shell, the reflection mirror surface is arranged at the bottom of the second shell, and the reflection mirror surface is the lowest surface of the emission module.

[0011] As a further optional solution, a reflector body is provided in the first shell, the reflector body is distributed laterally with the laser generator, and the reflector body is arranged below the light exit hole to reflect the laser emitted by the laser generator to the light exit hole.

[0012] As a further optional solution, an adjustment mechanism for adjusting the reflection angle of the laser by the reflector body is provided in the first shell.

[0013] As a further optional scheme, the adjustment mechanism includes a tray arranged in the first shell, the reflector body is arranged on the tray, the first shell supports the tray through a fulcrum, and the fulcrum is located below the reflector body; the tray is provided with three adjustment screws extending from top to bottom, the three adjustment screws are distributed on the outside of the fulcrum, and the lower end of the adjustment screw is threadedly connected to the first shell; a spring is sleeved on the adjusting screw, and the adjusting screw is provided with an abutting portion located above the tray, and the spring is located between the abutting portion of the adjusting screw and the tray.

[0014] As a further optional scheme, the fulcrum between the first shell and the tray is a steel ball, the first shell is provided with a first clamping hole, the bottom of the tray is provided with a second clamping hole, at least part of the steel ball is embedded in the first clamping hole, and at least part of the steel ball is embedded in the second clamping hole.

[0015] As a further optional solution, the first shell is a square box, and a target centered at the light exit hole is provided on the top of the first shell;

[0016] A positioning adjustment hole is recessed at the bottom of the first shell, and the positioning adjustment hole is coaxially arranged with the light exit hole.

[0017] As a further optional solution, the second shell is in a plate shape, and a counterweight is provided on the second shell, and the counterweight enables the reflection module to have a relatively heavy end and a light end.

[0018] As a further optional solution, a first magnetic block is provided on the first shell, and a second magnetic block is provided on the second shell. The first shell and the second shell are connected by magnetic attraction through the first magnetic block and the second magnetic attraction.

[0019] The technical solution of the second aspect of the present invention is achieved as follows:

[0020] A calibration method, using any of the above-mentioned simplified split calibration devices, comprises the following steps:

[0021] Placing the laser emission module on a reference surface of a platform, wherein the reference surface of the platform supports the supporting surface of the laser generation module;

[0022] The reflection module is placed on the component to be calibrated on the platform, the component to be calibrated supports the reflection mirror of the reflection module, and the reflection mirror is exposed from the edge of the component to be calibrated;

[0023] The laser emitting module emits a laser toward the reflecting mirror of the reflecting module, and the reflecting mirror reflects the laser. The deviation between the landing point of the reflected laser and the emission position of the laser on the laser emitting module is observed, and then the inclination direction of the reflecting mirror relative to the reference plane of the platform is determined. The component to be calibrated is adjusted until the landing point of the reflected laser coincides with the emission position of the laser on the laser emitting module.

[0024] Compared with the prior art, the simplified split calibration device and calibration method of the present application have at least the following beneficial effects:

[0025] The simplified split calibration device has a simple structure, a small size, is easy to carry, and is low in cost. It can effectively improve the calibration efficiency and solve the problem of calibration difficulties in the optical system. The calibration method determines whether the calibration is completed by observing the emission of laser by the reflection module. The calibration method is simple to operate, easy to implement, and has low requirements on the professional skills of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of a simple split calibration device of the present invention;

[0028] Figure 2 It is a structural schematic diagram of a laser emission module;

[0029] Figure 3 This is a schematic diagram of the bottom structure of the laser emission module;

[0030] Figure 4 is a schematic diagram of the bottom structure of the reflection module;

[0031] Figure 5 It is a schematic diagram of the internal structure of the laser reflection module;

[0032] Figure 6 is an exploded schematic diagram of the first housing and the adjustment mechanism;

[0033] Figure 7 It is a schematic diagram of the bottom structure of the adjustment mechanism;

[0034] Figure 8 is a cross-sectional schematic diagram of a simplified split calibration device in one embodiment;

[0035] Fig. 9 is a cross-sectional schematic diagram of a simplified split calibration device in another embodiment;

[0036] Fig.10 The figure is a schematic diagram of the application of a simple split calibration device of the present invention.

[0037] In the figure: 100, platform;

[0038] 1. Laser emission module; 11. First housing; 11a. Support surface; 111. Light exit hole; 112. Positioning adjustment hole; 113. First magnetic block; 114. First clamping hole; 115. Target; 12. Laser generator; 13. Reflector body; 14. Adjustment mechanism; 141. Tray; 1411. Second clamping hole; 142. Adjustment screw; 1421. Abutment portion; 143. Steel ball; 144. Spring;

[0039] 2. Transmitter module; 2a. Heavy end; 2b. Light end; 21. Second shell; 22. Reflection mirror; 23. Counterweight. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] refer to Figure 1-4 An embodiment of the present invention shows a simple split calibration device, including a laser emitting module 21 and a reflection module. The bottom of the laser emitting module 21 is formed with a support surface 11a, and the laser emitting module 21 emits a laser perpendicular to the support surface 11a; the reflection module has a reflection mirror 22 for reflecting the laser.

[0044] When calibrating with this simple split calibration device, if Fig.10 As shown:

[0045] The laser emitting module 21 is placed on the reference surface of the platform 100, and the reference surface of the platform 100 supports the supporting surface 11a of the laser generating module; the platform 100 shown in this embodiment is an optical breadboard, and the reference surface of the platform 100 refers to the top surface (mounting surface) of the optical breadboard;

[0046] The reflection module is placed on the component to be calibrated on the platform 100, and the component to be calibrated supports the reflection mirror surface 22 of the reflection module, and the reflection mirror surface 22 is exposed from the edge of the component to be calibrated; in this embodiment, the reflection module only needs to be placed on the component to be calibrated, and there is no need to perform operations such as screw locking, which is convenient for arrangement; of course, in other embodiments, the possibility of further fixing the reflection module is not excluded; wherein, the surface on the component to be calibrated for placing the reflection module is defined as the bearing surface, and the purpose of calibration is to make the bearing surface parallel to the reference surface of the platform 100;

[0047] The laser emitting module 21 and the reflecting module are aligned vertically so that the reflecting module is located in the laser emitting direction of the laser emitting module 21; the laser emitting module 21 emits laser light to the reflecting mirror 22 of the reflecting module, and the reflecting mirror 22 reflects the laser light, and the deviation between the landing point of the reflected laser light and the emission position of the laser light on the laser emitting module 21 is observed, wherein the greater the non-parallelism between the reflecting mirror 22 and the reference plane of the platform 100, the greater the deviation between the landing point of the reflected laser light and the emission position of the laser light on the laser emitting module 21; and then the inclination direction of the reflecting mirror 22 relative to the reference plane of the platform 100 is determined, and the component to be calibrated is adjusted until the landing point of the reflected laser light coincides with the emission position of the laser light on the laser emitting module 21, which means that the reflecting mirror 22 of the reflecting module is parallel to the supporting surface 11a of the laser emitting module 21, and also means that the bearing surface of the component to be calibrated is parallel to the reference plane of the platform 100.

[0048] In some embodiments, Figure 1-4 as well as Figure 8 As shown, the laser emitting module 21 includes a first shell 11, the support surface 11a is formed at the bottom of the first shell 11, a laser generator 12 for emitting the laser is arranged inside the first shell 11, and a light exit hole 111 for emitting the laser is arranged at the top of the first shell 11; conventionally, the laser generator 12 should be connected to a switch (not shown), which is arranged on the first shell 11, and the laser is turned on and off by the switch. During calibration, it is possible to observe whether the landing point of the reflected laser is at the light exit hole 111, which is easy to observe visually and it is easier to judge whether the landing point of the reflected laser coincides with the emission position of the laser on the laser emitting module 21;

[0049] Preferably, in order to further facilitate the observation of the deviation between the landing position of the reflected laser and the emission position of the laser on the laser emission module 21, as Figure 2 As shown, the first shell 11 is a square box, and a target 115 centered at the light exit hole 111 is provided on the top of the first shell 11; when the reflective mirror surface 22 is not parallel to the support surface 11a, the reflected laser will fall on the target 115 of the first shell 11, and the target 115 facilitates the operator to quickly grasp the tilt direction and tilt amplitude of the reflective mirror surface 22. The target 115 can be a groove on the surface of the first shell 11, or a drawn line.

[0050] The reflection module includes a second shell 21, the reflection mirror 22 is arranged at the bottom of the second shell 21, and the reflection mirror 22 is the lowest surface of the transmitting module 2. In this way, when the reflection module is placed on the component to be calibrated, the reflection mirror 22 fits with the bearing surface of the component to be calibrated.

[0051] Preferably, in order to further flatten the structure of the laser emitting module 21 so that it can be placed in a compact optical system when in use, Figure 5-8 As shown, a reflector body 13 is provided in the first shell 11, and the reflector body 13 and the laser generator 12 are distributed laterally. The reflector body 13 is arranged below the light exit hole 111 to reflect the laser emitted by the laser generator 12 to the light exit hole 111. Thus, in this embodiment, the laser generator 12 emits the laser laterally, and then the reflector body 13 is used to change the optical path of the laser so that the laser is emitted from the light exit hole 111; in this embodiment, the laser generator 12 and the reflector body 13 are distributed laterally, which is conducive to making the thickness of the first shell 11 thinner, and conveniently placing the first shell 11 in the bottom space of some optical machine components.

[0052] In some embodiments, in order to ensure that the laser emitted by the laser emitting module 21 remains perpendicular to the supporting surface 11 a , an adjustment mechanism 14 for adjusting the reflection angle of the laser by the reflector body 13 is provided in the first shell 11 .

[0053] Specifically, Figure 5-7 As shown, the adjustment mechanism 14 includes a tray 141 arranged in the first shell 11, the reflector body 13 is arranged on the tray 141, and the first shell 11 supports the tray 141 through a fulcrum, and the fulcrum is located below the reflector body 13; three adjustment screws 142 are arranged on the tray 141 from top to bottom, and the three adjustment screws 142 are distributed on the outside of the fulcrum, and the lower end of the adjustment screw 142 is threadedly connected to the first shell 11; a spring 144 is sleeved on the adjusting screw 142, and the adjusting screw 142 is provided with an abutment portion 1421 located above the tray 141, and the spring 144 is located between the abutment portion 1421 of the adjusting screw 142 and the tray 141.

[0054] Among them, one end of the spring 144 abuts against the abutment portion 1421, and the other end abuts against the tray 141. The spring 144 presses the tray 141 toward the fulcrum. When the adjusting screw 142 is rotated, the abutment portion 1421 can be raised or lowered, thereby adjusting the elastic force of the spring 144 on the tray 141, and then adjusting the inclination of the tray 141; by adjusting the inclination of the tray 141, the emission direction of the laser of the reflector body 13 can be realized, thereby ensuring that the laser emitted from the light outlet 111 remains perpendicular to the support surface 11a.

[0055] In some embodiments, Figure 8 As shown, the abutment portion 1421 is the nut of the adjusting screw 142, and the nut of the adjusting screw 142 is located inside the first shell 11. The first shell 11 protects the adjusting screw 142 to avoid external interference and increase the aesthetics. When the emission direction of the laser needs to be adjusted, the first shell 11 is first disassembled. In this embodiment, the first shell 11 is a square box body, including a box body and a box cover. The box cover can be disassembled to expose the nut of the adjusting screw 142.

[0056] In other embodiments, Fig. 9 As shown, the abutment portion 1421 is a structure fixed on the stud of the adjusting screw 142, and the nut of the adjusting screw 142 is exposed outside the first shell 11. When the emission direction of the laser needs to be adjusted, there is no need to disassemble the first shell 11, which is convenient for adjustment.

[0057] The above scheme is specific, such as Figure 6-8 As shown, the fulcrum between the first shell 11 and the tray 141 is a steel ball 143, the first shell 11 is provided with a first clamping hole 114, the bottom of the tray 141 is provided with a second clamping hole 1411, at least part of the steel ball 143 is embedded in the first clamping hole 114, and at least part of the steel ball 143 is embedded in the second clamping hole 1411. In this way, the first clamping hole 114 and the second clamping hole 1411 are used to fix the position of the steel ball 143 to prevent the steel ball 143 from moving in the first shell 11; the tray 141 can flip around the steel ball 143. In this embodiment, the first clamping hole 114 and the second clamping hole 1411 are tapered holes.

[0058] Preferably, before calibrating the component to be calibrated, the laser emitting direction of the laser emitting module 21 should be detected first, and the detection process is as follows:

[0059] The laser emitting module 21 is rotated with the light emitting hole 111 as the axis, and the axis of the light emitting hole 111 is perpendicular to the supporting surface 11a. The laser emission is maintained during the rotation, and the laser is emitted to an obstruction, such as an indoor ceiling, and the landing point of the laser on the obstruction is observed to see whether it moves; if the landing point of the laser moves along a circular trajectory on the obstruction, it means that the laser is not perpendicular to the supporting surface 11a; if the landing point of the laser is observed to remain unchanged, it means that the laser is perpendicular to the supporting surface 11a.

[0060] In some embodiments, in order to facilitate the detection of the laser emission direction, Figure 3 , Figure 8 or Fig. 9 As shown, a positioning adjustment hole 112 is recessed at the bottom of the first shell 11, and the positioning adjustment hole 112 is coaxially arranged with the light exit hole 111. In the above detection process, the positioning adjustment hole 112 of the first shell 11 can be inserted into a column (not shown), and the position of the column is fixed. When the first shell 11 is rotated, the first shell 11 rotates around the positioning adjustment hole 112, that is, the first shell 11 rotates around the light exit hole 111.

[0061] In some embodiments, in order to further flatten the structure of the reflection module so that it can be placed in a compact optical system when in use, Figure 4 As shown, the second shell 21 is in the shape of a plate. When used, the second shell 21 is placed on the component to be calibrated. Fig.10 As shown, at least part of the second shell 21 should be suspended, so that part of the reflective mirror 22 is located in the emission direction of the laser, and at the same time, part of the reflective mirror 22 is in contact with the bearing surface on the component to be calibrated; in this way, it is necessary to ensure that the center of gravity of the transmitting module 2 is located in the vertical projection range of the component to be calibrated to prevent the transmitting module 2 from falling; in this embodiment, a counterweight 23 is provided on the second shell 21, and the counterweight 23 forms a relative heavy end 2a and a light end 2b on the reflecting module. When arranging the reflecting module, the heavy end 2a can be placed on the component to be calibrated, and the light end 2b can be suspended. By arranging the counterweight 23, even if the volume of the reflecting module is small, the transmitting module 2 can be kept stable in a partially suspended state, so the counterweight 23 is conducive to making the volume of the reflecting module smaller.

[0062] In some embodiments, Figure 3As shown, the first shell 11 is provided with a first magnetic block 113, and the second shell 21 is provided with a second magnetic block (not shown), and the first shell 11 and the second shell 21 are connected by a magnetic adsorption through the first magnetic block 113 and the second magnetic attraction. In this embodiment, when not in use, the laser emitting module 21 and the reflection module can be fixed together, which is convenient for transportation and carrying, and can also prevent the laser emitting module 21 and the reflection module from being easily lost; when in use, the reflection module can be directly pulled out from the laser emitting module 21, which is easy to operate. The first magnetic block 113 / the second magnetic block can be embedded in the inside of the first shell 11 / the second shell 21, making the appearance more beautiful, while preventing the first magnetic block 113 / the second magnetic block from falling off and being lost.

[0063] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A simple split calibration device, characterized in that: include: A laser emitting module, wherein a support surface is formed at the bottom of the laser emitting module, and the laser emitting module emits a laser perpendicular to the support surface; A reflection module is provided, wherein the reflection module has a reflection mirror surface for reflecting the laser.

2. The simplified split calibration device according to claim 1, characterized in that: The laser emitting module comprises a first shell, the supporting surface is formed at the bottom of the first shell, a laser generator for emitting the laser is arranged in the first shell, and a light emitting hole for emitting the laser is arranged at the top of the first shell; The reflection module includes a second shell, the reflection mirror surface is arranged at the bottom of the second shell, and the reflection mirror surface is the lowest surface of the emission module.

3. The simplified split calibration device according to claim 2, characterized in that: A reflector body is disposed in the first shell, and the reflector body and the laser generator are distributed transversely. The reflector body is disposed below the light exit hole to reflect the laser emitted by the laser generator to the light exit hole.

4. The simplified split calibration device according to claim 3, characterized in that: An adjusting mechanism for adjusting the reflection angle of the laser by the reflector body is arranged in the first shell.

5. The simplified split calibration device according to claim 4, characterized in that: The adjustment mechanism includes a tray arranged in the first shell, the reflector body is arranged on the tray, the first shell supports the tray through a fulcrum, and the fulcrum is located below the reflector body; three adjustment screws are arranged on the tray from top to bottom, the three adjustment screws are distributed on the outside of the fulcrum, and the lower end of the adjustment screw is threadedly connected to the first shell; a spring is sleeved on the adjustment screw, and the adjustment screw is provided with an abutment portion located above the tray, and the spring is located between the abutment portion of the adjustment screw and the tray.

6. The simplified split calibration device according to claim 5, characterized in that: The fulcrum between the first shell and the tray is a steel ball, the first shell is provided with a first clamping hole, the bottom of the tray is provided with a second clamping hole, at least part of the steel ball is embedded in the first clamping hole, and at least part of the steel ball is embedded in the second clamping hole.

7. The simplified split calibration device according to claim 2, characterized in that: The first shell is a square box, and a target centered at the light exit hole is provided on the top of the first shell; A positioning adjustment hole is recessed at the bottom of the first shell, and the positioning adjustment hole is coaxially arranged with the light exit hole.

8. The simplified split calibration device according to claim 2, characterized in that: The second shell is in a plate shape, and a counterweight is disposed on the second shell. The counterweight enables the reflection module to have a relatively heavy end and a relatively light end.

9. The simplified split calibration device according to claim 8, characterized in that: The first shell is provided with a first magnetic block, the second shell is provided with a second magnetic block, and the first shell and the second shell are connected by magnetic attraction through the first magnetic block and the second magnetic attraction.

10. A calibration method, characterized in that: The simplified split calibration device according to any one of claims 1 to 9 comprises the following steps: Placing the laser emission module on a reference surface of a platform, wherein the reference surface of the platform supports the supporting surface of the laser generation module; The reflection module is placed on the component to be calibrated on the platform, the component to be calibrated supports the reflection mirror of the reflection module, and the reflection mirror is exposed from the edge of the component to be calibrated; The laser emitting module emits a laser toward the reflecting mirror of the reflecting module, and the reflecting mirror reflects the laser. The deviation between the landing point of the reflected laser and the emission position of the laser on the laser emitting module is observed, and then the inclination direction of the reflecting mirror relative to the reference plane of the platform is determined. The component to be calibrated is adjusted until the landing point of the reflected laser coincides with the emission position of the laser on the laser emitting module.

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